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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7213) Have HLog files for .META. edits only
Date Wed, 28 Nov 2012 19:15:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13505803#comment-13505803

stack commented on HBASE-7213:

On the approach in the sketch patch:

Passing a flag to instantiateHLog when its meta is a little awkward.  Ripples all the ways
down.  Would instantiateMetaHLog and createMetaHLog in the factory be more plain about what
is going on?  Runs into a wall at FSHLog though though here, is there anything in the  log
name that would denote it a .META. WAL?

Patch doesn't look bad so far.  Not too intrusive for big payback.

I was thinking this facility would come in as part of the multiwal work... if multiwals, make
provision for an extra if carrying .meta..... but this seems like shorter path.  Do you think
this work will get in the way of the multiwal feature?

> Have HLog files for .META. edits only
> -------------------------------------
>                 Key: HBASE-7213
>                 URL: https://issues.apache.org/jira/browse/HBASE-7213
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, regionserver
>            Reporter: Devaraj Das
>            Assignee: Devaraj Das
>         Attachments: 7213-in-progress.patch
> Over on HBASE-6774, there is a discussion on separating out the edits for .META. regions
from the other regions' edits w.r.t where the edits are written. This jira is to track an
implementation of that.

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